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Finding the Third Proportional to 12,516 and 20,862

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Solution

The third proportional to 12,516 and 20,862 is: 34,773.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,516 : 20,862 = 20,862 : x
  2. Step 2: Convert to fraction form
    12,516/20,862 = 20,862/x
  3. Step 3: Cross multiply
    12,516x = 20,862 × 20,862
  4. Step 4: Simplify right side
    12,516x = 435,223,044
  5. Step 5: Solve for x
    x = 435,223,044/12,516
  6. Step 6: Final answer
    x = 34,773.33

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.